Kärcher SB MB, User Manual

Page: 49 / 424

English 49
Setting the blending device (option)
The booster heater is supplied with partially softened
water with a water hardness of 7° dH. For this purpose,
the blending device mixes fresh water and softened wa-
ter.
1. Open the stop valves for soft water and hard water
completely.
1
Mixed water output
2
Soft water stop valve
3
Bypass valve
4
Control valve
5
Hard water stop valve
6
Fresh water input (hard)
7
Fresh water output (hard)
8
Check valve, input for soft water (0°dH)
2. Close the control valve.
3. Close the bypass valve.
4. Slightly open the float valve in the hot water float
tank.
5. Open the bypass valve until 7°dH is measured at the
mixed water output.
6. Open the float valve in the hot water float tank com-
pletely.
7. Open the control valve until 7°dH is measured at the
mixed water output.
8. Carry out control measurements at different water
removal quantities. The water hardness must be be-
tween 6°dH and 8°dH.
Setting the hot air blower
Two hot air blowers heat the interior of the system to
provide frost protection.
몇
WARNING
Risk of fire
Hot air blowers can overheat if the air input or output is
obstructed.
Do not cover the air input openings and the air output
openings of the hot air blowers.
1. Set the power regulator and the thermostat regula-
tor to the values recommended below depending on
the expected lowest outdoor temperature.
1
Power controller
2
Thermostat control
Setting the washing station heater
The thermostatic mixing valve regulates the flow tem-
perature as a function of the return temperature:
22°C=scale value 3.
1. If necessary, correct the setting of the thermostatic
mixing valve according to the following table:
1
Thermostatic mixing valve
Setting the frost protection with water loss
This frost protection device is activated by the controller
if there is a risk of frost. High-pressure lines and trigger
guns have fresh water flowing through them to protect
them from freezing.
1. Switch on the frost protection pump (see chapter
"Controller/Service menu").
2. Set the pressure reducer so that at least 0.5 l/min of
water flows from each trigger gun.
1
Pressure reducer
3. Switch off the frost protection pump.
Setting the emergency frost protection
The emergency frost protection is activated in the event
of a defective frost protection pump (in systems without
mains disconnection also in the event of a power fail-
ure). High-pressure lines and trigger guns have fresh
water flowing through them to protect them from freez-
ing.
1. Turn the main switch to position “0”.
2. Set the pressure reducer so that at least 0.5 l/min of
water flows from each trigger gun.
1
Pressure reducer
Outdoor thermostat
The outdoor thermostat switches on the following frost
protection devices depending on the outdoor tempera-
ture:
below +3°C:
● the hose heating for dry foam (option)
● the heating cartridge and the trace heating ABS fuel
oil tank (option)
below +1°C:
● the washing station heater circulation pump
● the circulation pump frost protection
Note
The switching temperature of the outdoor thermostat
can be set by customer service.
Controller
The touchscreen is mounted on the electrical box inside
the system.
1
Electrical box
2
Touch screen
The following functions are displayed in the start menu.
Start menu
1
Date
2
Time
3
Outdoor temperature (for systems with outdoor
thermostat)
4
Registered user
5
Service required
6
Operating status symbols
7
“Washing” / “Vacuuming” menu button
8
“Service” menu button
9
“Settings” menu button
10
“General Info” menu button
Operating status symbols
User symbols
Hot air blower
0°
C.
..
-10°
C
-10°C.
..
-2
0°C
top Power controller II II
Thermostat control II III
bottom Power controller II II
Thermostat control * I
1
2
Scale value 0 1 2 3 4 5
Return temperature [°C] 10 14 18 22 26 30
Scale value 6 7 8 9 10
Return temperature [°C] 34 38 42 46 50
System open
System closed
System in order
Event present
Malfunctions present
Operator
Owner
Service